Depends on your goal and plans. If you want a pro site paid is better but if you want experiment for you local network free would do.

Yes, i wanna experiment - free of charge, so please can you tell me how to create that, or simply what page im have to go to do it. And by the way, the vBulletin is paid always, it isnt for free, is it?

Anyday I would go for Forums. It not only helps your SEO needs but also provides lot of knowledge. Building a blog from the start ant getting good PR to it by updating regular long blog posts is a lengthy process, whereas forums has much much better PR than blogs. You also read and write forums posts on various aspects.

Anyday I would go for Forums. It not only helps your SEO needs but also provides lot of knowledge. Building a blog from the start ant getting good PR to it by updating regular long blog posts is a lengthy process, whereas forums has much much better PR than blogs. You also read and write forums posts on various aspects.